GSTDTAP  > 气候变化
DOI10.1088/1748-9326/aab18f
Gas exchange at whole plant level shows that a less conservative water use is linked to a higher performance in three ecologically distinct pine species
Salazar-Tortosa, D.1; Castro, J.1; Rubio de Casas, R.1; Vinegla, B.2; Sanchez-Canete, E. P.3; Villar-Salvador, P.4
2018-04-01
发表期刊ENVIRONMENTAL RESEARCH LETTERS
ISSN1748-9326
出版年2018
卷号13期号:4
文章类型Article
语种英语
国家Spain
英文摘要

Increasing temperatures and decreasing precipitation in large areas of the planet as a consequence of global warming will affect plant growth and survival. However, the impact of climatic conditions will differ across species depending on their stomatal response to increasing aridity, as this will ultimately affect the balance between carbon assimilation and water loss. In this study, we monitored gas exchange, growth and survival in saplings of three widely distributed European pine species (Pinus halepensis, P. nigra and P. sylvestris) with contrasting distribution and ecological requirements in order to ascertain the relationship between stomatal control and plant performance. The experiment was conducted in a common garden environment resembling rainfall and temperature conditions that two of the three species are expected to encounter in the near future. In addition, gas exchange was monitored both at the leaf and at the whole-plant level using a transient-state closed chamber, which allowed us to model the response of the whole plant to increased air evaporative demand (AED). P. sylvestris was the species with lowest survival and performance. By contrast, P. halepensis showed no mortality, much higher growth (two orders of magnitude), carbon assimilation (ca. 14 fold higher) and stomatal conductance and water transpiration (ca. 4 fold higher) than the other two species. As a consequence, P. halepensis exhibited higher values of water-use efficiency than the rest of the species even at the highest values of AED. Overall, the results strongly support that the weaker stomatal control of P. halepensis, which is linked to lower stem water potential, enabled this species to maximize carbon uptake under drought stress and ultimately outperform the more water conservative P. nigra and P. sylvestris. These results suggest that under a hotter drought scenario P. nigra and P. sylvestris would very likely suffer increased mortality, whereas P. halepensis could maintain gas exchange and avoid water-induced growth limitation. This might ultimately foster an expansion of P. halepensis to higher latitudes and elevations.


英文关键词air evaporative demand climatic change European pines gas exchange hotter drought stomatal conductance transient-state closed chamber
领域气候变化
收录类别SCI-E
WOS记录号WOS:000434852300001
WOS关键词ANISOHYDRIC BEHAVIOR ; USE EFFICIENCY ; SEVERE DROUGHT ; LEAF ; MORTALITY ; CLIMATE ; SEEDLINGS ; STRESS ; SOIL ; GROWTH
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
被引频次:19[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/34348
专题气候变化
作者单位1.Univ Granada, Dept Ecol, Fac Ciencias, Av Fuentenueva SN, E-18071 Granada, Spain;
2.Univ Jaen, Fac Ciencias Expt, Dept Biol Anim Vegetal & Ecol, Campus Las Lagunillas SN, Jaen 23009, Spain;
3.Univ Granada, Fac Ciencias, Dept Fis Aplicada, Av Fuentenueva SN, E-18071 Granada, Spain;
4.Univ Alcala De Henares, Dept Ciencias Vida, Forest Ecol & Restorat Grp, POB 20, Madrid 28805, Spain
推荐引用方式
GB/T 7714
Salazar-Tortosa, D.,Castro, J.,Rubio de Casas, R.,et al. Gas exchange at whole plant level shows that a less conservative water use is linked to a higher performance in three ecologically distinct pine species[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(4).
APA Salazar-Tortosa, D.,Castro, J.,Rubio de Casas, R.,Vinegla, B.,Sanchez-Canete, E. P.,&Villar-Salvador, P..(2018).Gas exchange at whole plant level shows that a less conservative water use is linked to a higher performance in three ecologically distinct pine species.ENVIRONMENTAL RESEARCH LETTERS,13(4).
MLA Salazar-Tortosa, D.,et al."Gas exchange at whole plant level shows that a less conservative water use is linked to a higher performance in three ecologically distinct pine species".ENVIRONMENTAL RESEARCH LETTERS 13.4(2018).
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